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# What this PR does This PR: - modifies the `check_escalation_finished_task` celery task to: - do stricter escalation validation based on the alert group's escalation snapshot (see the `audit_alert_group_escalation` method in `engine/apps/alerts/tasks/check_escalation_finished.py` for the validation logic) - use a read-only database for querying alert-groups if one is configured, otherwise use the "default" one - ping a configurable heartbeat (new env var `ALERT_GROUP_ESCALATION_AUDITOR_CELERY_TASK_HEARTBEAT_URL` added) - increase the task frequency from every 10 to every 13 minutes (this can be configured via an env variable) - adds public documentation on how to configure this auditor task - modifies the local celery startup command to properly take into consideration all celery related env vars (similar to the ones we use in `engine/celery_with_exporter.sh`; this made it easier to enable `celery beat` locally for testing) - removes the following code: - removes references to `AlertGroup.estimate_escalation_finish_time` and marks the model field as deprecated using the [`django-deprecate-fields` library](https://pypi.org/project/django-deprecate-fields/). This field was only used for the previous version of this validation task - `EscalationSnapshotMixin.calculate_eta_for_finish_escalation` was only used to calculate the value for `AlertGroup.estimate_escalation_finish_time` - `calculate_escalation_finish_time` celery task ## Which issue(s) this PR fixes https://github.com/grafana/oncall-private/issues/1558 ## Checklist - [x] Tests updated - [x] Documentation added - [x] `CHANGELOG.md` updated |
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